In the episode, titled “Docu.Drama,” Frasier (Kelsey Grammer) and his radio producer Roz (Peri Gilpin) get into a fight, so she invites the former astronaut to guest-host a documentary about space travel (watch the scene here).

Unbeknownst to Roz, Frasier and Glenn are old friends, so he uses the substitute host to push his ideas for the program anyway, which leads Roz to erupt on Frasier when she figures out his deception. Among all their bickering, they fail to notice that Glenn has taken over the mike and started going off about how he’s “seen things out there — strange things,” and his NASA bosses’ “War of the Worlds”-esque concerns during his space missions.

By the end of the scene, however, he think better of his “honest” admission — and quickly confiscates the tape.